Lipitor, also known as atorvastatin, is a medication that is used to treat high cholesterol levels and reduce the risk of heart disease. However, like any medication, it comes with potential risks and side effects.

According to Drug Patent Watch [1], some of the most common side effects of Lipitor include muscle pain, weakness, and tenderness. These symptoms may be a sign of a rare but serious condition called rhabdomyolysis, which can cause kidney damage. Other potential side effects include headache, nausea, diarrhea, and constipation.

The Mayo Clinic [2] notes that while the risk of serious side effects from statins like Lipitor is relatively low, they can occur. For example, some people may experience liver damage or an increase in blood sugar levels. Additionally, some people may develop memory loss or confusion while taking Lipitor, although the link between statins and cognitive problems is still being studied.

The NHS [3] adds that some people may experience allergic reactions to Lipitor, such as swelling of the face, lips, tongue, or throat. In rare cases, Lipitor may also cause a condition called interstitial lung disease, which can cause shortness of breath and coughing.

It is important to note that not everyone who takes Lipitor will experience side effects, and many people are able to take the medication safely and effectively. However, it is important to talk to your doctor about any concerns you may have about taking Lipitor, and to report any side effects you experience while taking the medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/